© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community
Amphipod crustaceans form one of the most diversified animal groups within the Antarctic macrozoobenthos, both from the taxonomic point of view (more than 800 species have been recorded in the Southern Ocean) as by niche occupation and at the community level. Thus, amphipods are likely to play an im...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1028.5149 2023-05-15T13:44:16+02:00 © 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community Patrick Dauby Yves Scailteur Claude De Broyer The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1028.5149 http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1028.5149 http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf text 2000 ftciteseerx 2016-10-30T00:06:31Z Amphipod crustaceans form one of the most diversified animal groups within the Antarctic macrozoobenthos, both from the taxonomic point of view (more than 800 species have been recorded in the Southern Ocean) as by niche occupation and at the community level. Thus, amphipods are likely to play an important role in the organic matter fluxes that occur on the Antarctic sea floor. The dietary behaviour of these peracarids is still poorly known, and only few species have been analysed. This paper describes the trophic preferences of some dominant amphipod species of the Eastern Weddell Sea benthos, deduced from stomach content analyses and behavioural observations in aquaria. More than 1000 specimens, belonging to 40 species (representing 27 genera and 15 fam-ilies) were dissected; and several thousands of individuals were kept in aquaria for 6–9 weeks and presented with various potential foods. These two approaches revealed at least eight different feeding types: suspension-feeding, deposit-feeding, deposit-feeding coupled with predation, opportunistic predation, micropredatory browsing, mac-ropredation coupled with scavenging, opportunistic necrophagy and true necrophagy. These different behaviours cover almost all the possible feeding types with the exception of macroherbivorous browsing. Among the eight de-scribed feeding types, no particular one is dominant. In the same way, types involving microphagy and macrophagy are equally represented. Predatory types (opportunistic or exclusive) account for 64 % of the species analysed, while scavenging types (facultative or obligate) account for 60%. The overlap suggests that many amphipod species have a wide dietary spectrum and are able to take advantage of different food resources. Text Antarc* Antarctic Southern Ocean Weddell Sea Unknown Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
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Open Polar |
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ftciteseerx |
language |
English |
description |
Amphipod crustaceans form one of the most diversified animal groups within the Antarctic macrozoobenthos, both from the taxonomic point of view (more than 800 species have been recorded in the Southern Ocean) as by niche occupation and at the community level. Thus, amphipods are likely to play an important role in the organic matter fluxes that occur on the Antarctic sea floor. The dietary behaviour of these peracarids is still poorly known, and only few species have been analysed. This paper describes the trophic preferences of some dominant amphipod species of the Eastern Weddell Sea benthos, deduced from stomach content analyses and behavioural observations in aquaria. More than 1000 specimens, belonging to 40 species (representing 27 genera and 15 fam-ilies) were dissected; and several thousands of individuals were kept in aquaria for 6–9 weeks and presented with various potential foods. These two approaches revealed at least eight different feeding types: suspension-feeding, deposit-feeding, deposit-feeding coupled with predation, opportunistic predation, micropredatory browsing, mac-ropredation coupled with scavenging, opportunistic necrophagy and true necrophagy. These different behaviours cover almost all the possible feeding types with the exception of macroherbivorous browsing. Among the eight de-scribed feeding types, no particular one is dominant. In the same way, types involving microphagy and macrophagy are equally represented. Predatory types (opportunistic or exclusive) account for 64 % of the species analysed, while scavenging types (facultative or obligate) account for 60%. The overlap suggests that many amphipod species have a wide dietary spectrum and are able to take advantage of different food resources. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Patrick Dauby Yves Scailteur Claude De Broyer |
spellingShingle |
Patrick Dauby Yves Scailteur Claude De Broyer © 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
author_facet |
Patrick Dauby Yves Scailteur Claude De Broyer |
author_sort |
Patrick Dauby |
title |
© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
title_short |
© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
title_full |
© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
title_fullStr |
© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
title_full_unstemmed |
© 2001 Kluwer Academic Publishers. Printed in the Netherlands. 69 Trophic diversity within the eastern Weddell Sea amphipod community |
title_sort |
© 2001 kluwer academic publishers. printed in the netherlands. 69 trophic diversity within the eastern weddell sea amphipod community |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1028.5149 http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Southern Ocean Weddell Sea |
op_source |
http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1028.5149 http://orbi.ulg.ac.be/bitstream/2268/77199/1/Hydrobiologia.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766199576465768448 |